Her father-in-law had served as the principal power behind the throne for Henry VI of England from 1447 to 1450.[4] His three years in this position saw the near-complete loss of the English possessions in northern France, towards the end of Hundred Years' War. Suffolk could not avoid taking the fall for the failure. He had been imprisoned in the Tower of London and had been attainted. Consequently, John had not succeeded to his titles when his father was executed on 2 May 1450.

Her older brother Edward IV of England restored his brother-in-law to the title of Duke of Suffolk in 1463.[4] She remained the Duchess of Suffolk until his death in 1491/1492.[4] They were settled in Wingfield Suffolk.

She survived her husband by almost a decade. She is last mentioned alive in January 1503. She was mentioned being deceased by May 1504. Her death is placed in the sixteen months in between the two reports.